2516609 has 4 divisors (see below), whose sum is σ = 2522880. Its totient is φ = 2510340.

The previous prime is 2516603. The next prime is 2516659. The reversal of 2516609 is 9066152.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2516609 - 2¹² = 2512513 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2516603) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2489 + ... + 3350.

It is an arithmetic number, because the mean of its divisors is an integer number (630720).

2^2516609 is an apocalyptic number.

It is an amenable number.

2516609 is a deficient number, since it is larger than the sum of its proper divisors (6271).

2516609 is an equidigital number, since it uses as much as digits as its factorization.

2516609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6270.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 2516609 is about 1586.3823624839. The cubic root of 2516609 is about 136.0207760936.

It can be divided in two parts, 2516 and 609, that added together give a 5-th power (3125 = 5⁵).

The spelling of 2516609 in words is "two million, five hundred sixteen thousand, six hundred nine".